Driving mechanism.



J. DUITCH.

DRIVING MECHANISM.

APPLIOATION FILED mlm, 1910.

@F3/ Sfff Patented Sept 27, 1910.

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JOSEPH DUITCH, OF FARMINGTON, WEST VIRGINIA.

DRVING MECHANISIVI.

Specification of Letters Patent,

Patented Sept. 27, 1910.

Application led February E), 1910. Serial No. 542,882.

To all whom it may concern:

cient central opening to admit of the hub of Be it known that JOSEPH DUITCH, a citi- I an intermediate friction disk or member 12 zen of 'the United States, and a resident of Farmington, in the county of Marion and State of West Virginia, have invented a new and Improved Driving Mechanism, of which the following is a full, clear', and exact description.

The invention is an improvement in driving mechanisms such as embody a shaft, a clutch, and a pulley or other belt or driving wheel, with the clutch associated with the wheel and shaft to connect and disconnect them at will.

The object of the invention is to relieve the shaft of the strain on the wheel incident to the pull on the belt, and also prevent wear between the pulley and shaft so that these parts constantly remain concentric and insure an accurate centering; of the clutch members.

Reference is to be had to the accompanying drawings forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure 1 is a central loiigitudinal section through a driving' mechanism embodying my invention; l? 2 is a cross-section oit' the same on the line 2N2 of lligf. 1.; and Fig. 3 is a cross-section on the line of liti: 1.

The mechanism essentially embodies a rev oluble shaft, a pulley or other belt or driving-wheel b, and a clutch 7, with the clutch arranged and constructed to connect and disconnect the shaft and pulley at will, and the pulley supported independent-ly of the sha-ft, whereby the latter lis relieved of strain, and wearing between these parts avoided so that the clutch members are kept constantly concentric. To this end the pulley is keyed or otherwise lined to a hollow shaft 8 which is journaled in bearings 9 arranged close to the opposite sides of the pulley, the hollow shaft being' accurately centered with the shaft 5 and. made substantially larger in internal diameter than the diameter of the shaft 5, so that there will be ample clearance between them.

The hollow shaft 8 is extended some distance beyond one the bearings l), where it 'has keyed or otherwise suitably attached a friction disk 10, forming one of the clutch 7, the opposite and outer side beinga formed by a frictio disk or membei` 11. un attached t' 'the snatt 5 and having a extending outwardly therethrough, the intermediate t'riction disk being fixed to theshaft 5 in a suitable. waysuch as, by the set-screw 13 threaded through its hub at the outer side of the friction disk 11. The intermediate friction disk 1.2 is substantially less in (1iamcter than the outer friction disks 1() and 11, and between the several disks are placed friction disks 111, of wood or other Suitable material, the diameter of which is substantially the same as the friction disk 12, and are ordinarily held in place hy attaching them to the outer friction disks 10 and 11 respectively. The friction disks 10 and 11 are connected together through their outer portions by bolts 15, the threaded end of each bolt being secured to the friction disk 11 by binding the latter at opposite sides by nuts 1G, The heads of the several bolts 15 are bifurcated or slotted at the sides and receive locking levers 17 which are pivoted thereto and have cams 18 at the ends, the cams drawingl the outer disks together when the inner edges of the levers are extended along and bear on the face of the friction disk 10. The operation of the levers 17 to apply and release the clutch is controlled by the usual collar 19, slidably splined on the hollow shaft 8 and operatively connected with the cam levers by links 20, the collar being moved back and forth by the shifting lever 21, which has a fork 22 at its inner end engaging the pins or projections Q3 extending at diametric'ally opposite points from the ring,` 24 revoluble 1n the annular groove of the collar, as is well known'in clutch construction. The shifting lever 2l has a fixed fulcrum 25 intermediate its length so that when the handle of the lever Y is moved away from the clutch, the members of the clutch will be locked and the pulley and shaft connected, as illustrated in Fig. 1. When the shifting lever-"is moved in the op posite direction, the'cam levers 17 will he 'drawn out by the links, allowing the bolts claim as new and desire to secure byLet-l ters Patent: 1. The combination of bearings, a revolublu shaft suppoed ndependen' of H19 142 Linn and. (mi Of Cm 3- seurmgs a hollow shat wrange@ on lle @31d chtsh is @paisa fgt-named sha; and revoubly Suppox smits, having C L in the said bemur go the hOHGW 5T; und a Clutch ma wmxfc' ih@ hm livrer slew@ sfla 2 Th@ combina i011 hollow shffx 01. L

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